Description
Amtrol invented the thermal expansion tank to control pressure build-up in closed, potable water systems. This prevents the water heater pressure relief valve from opening, saves energy and eliminates a potential safety hazard. All Therm-X-Trol expansion tanks are made in our ISO 9001:2015 certified facility
Features
- Accepts expanded water as system temperature rises and returns hot water to system when demand occurs.
- Patented air cell eliminates pressure surge to protect heat exchanger.
- Required by most building codes and all water heater warranties.
- 7-Year limited warranty: The industry's longest.
- 304L stainless steel waterway
- Big protection in a compact size.
